Penstemon fruticiformis var. incertus (Brandegee) Munz & I.M.Johnst. Bull. S. Calif. Acad. Sci. 23: 33 (1924)

Nomenclatural References

• person : Ivan Murray Johnston (1898-1960) Based on occurrence of standard abbreviation 'I.M.Johnst.' in the authors string.
• person : Philip A. Munz (1892-1974) Based on occurrence of standard abbreviation 'Munz' in the authors string.
• database : IPNI record: 187402-2